Process for preparing thin film having high light transmittance

Details Process for preparing thin film having high light transmittance Process for preparing thin film having high light transmittance

1985-12-06

1988-05-31

Bell, Janyce A.

Coating processes

Optical element produced

Transparent base

427171, 427209, 4272481, 427294, B05D 506

Patent

active

047480505

ABSTRACT:
A thin coated film having a transmittance of 96% or more for light having a particular wavelength in a range of 300 to 700 nm is prepared by coating one or both surfaces of a thin film of a transparent resin having a uniform thickness of 0.5 to 10 .mu.m with a colorless metal fluoride or oxide all over the area thereof with a thickness of about 100 nm while holding the thin film in a uniformly tensional state.

REFERENCES:
patent: 2466119 (1949-04-01), Moulton et al.
patent: 2628921 (1953-02-01), Weinrich
patent: 2758948 (1956-08-01), Simon
patent: 3356522 (1967-12-01), Libbert
patent: 3475192 (1969-10-01), Langley
patent: 3944440 (1976-03-01), Franz
patent: 3958042 (1976-05-01), Katsube et al.
patent: 4172156 (1979-10-01), Ritter et al.
patent: 4252843 (1981-02-01), Dorer et al.

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